Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5147486 | International Journal of Hydrogen Energy | 2017 | 11 Pages |
Abstract
This work studies 2 wt% Pt catalysts. The support is a SiO2-C composite whose main features are a high specific surface due to its mesoporosity, a higher thermal stability than the C support, and the absence of surface acid sites which could promote the dehydration reactions that produce coke precursors. The Pt/SiO2-C catalyst has very small metallic particles (dva = 1.37 nm) that favor the CC bond cleavage reactions which allow obtaining total gas conversion at 450 °C. With this catalyst, it is possible to obtain high yields to H2, between 4 and 5, which indicates that the active sites promote the WGS reaction, even with glycerol concentrations of 30 and 50%. Pt/SiO2-C is a very stable catalyst since it loses only 10% of its initial activity after 66 h on stream and is resistant to sintering and coke deposition.
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Authors
Ivana N. Buffoni, MartÃn N. Gatti, Gerardo F. Santori, Francisco Pompeo, Nora N. Nichio,